JP3247145B2 - Method for producing oxide-based glass and fluorine-containing glass - Google Patents
Method for producing oxide-based glass and fluorine-containing glassInfo
- Publication number
- JP3247145B2 JP3247145B2 JP13588692A JP13588692A JP3247145B2 JP 3247145 B2 JP3247145 B2 JP 3247145B2 JP 13588692 A JP13588692 A JP 13588692A JP 13588692 A JP13588692 A JP 13588692A JP 3247145 B2 JP3247145 B2 JP 3247145B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- tin
- fluorine
- producing
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガラス原料の加熱溶融
工程において、新規な脱泡清澄剤を使用することによ
り、環境汚染問題を改善しつつ、脱泡均質性と光線透過
性に優れた酸化物系ガラスおよび弗素含有系ガラスを製
造する方法に関する。BACKGROUND OF THE INVENTION The present invention uses a novel defoaming fining agent in the heating and melting step of a glass raw material, thereby improving the problem of environmental pollution, and achieving excellent defoaming homogeneity and light transmittance. The present invention relates to a method for producing an oxide-based glass and a fluorine-containing glass.
【０００２】[0002]
【従来の技術】従来、光学用、エレクトロニクス用、オ
プトエレクトロニクス用、建築用、容器用および装飾用
等のガラスおよびガラスセラミックスの製造分野におい
て、溶融状態のガラスを精製するに際し、種々の脱泡清
澄剤が使用されてきた。例えば、Ａｓ2Ｏ3およびＳｂ2
Ｏ3は古くから一般に広く利用されてきたが、これらの
成分は有害性が強く、ガラス製造時に一部は大気中に発
散し、またガラス中の残存分は、ガラス加工時に排出す
るガラス屑やスラッジ等により環境を汚染するという問
題がある。また、Ｎａ2ＳＯ4等の金属硫酸塩およびＮａ
Ｃｌ等の金属ハロゲン化物等の脱泡清澄剤も知られてい
るが、脱泡効果が小さいうえ、ガラスの光線透過率が悪
いという欠点がある。2. Description of the Related Art Conventionally, in the field of manufacturing glass and glass-ceramics for optics, electronics, optoelectronics, construction, containers and decorations, various kinds of defoaming and fining are used for refining glass in a molten state. Agents have been used. For example, As 2 O 3 and Sb 2
O 3 has been widely used in general for a long time, but these components are highly harmful, some of them are released into the air during glass production, and the remainder in the glass is made up of glass dust and waste that is discharged during glass processing. There is a problem that the environment is polluted by sludge or the like. Metal sulfates such as Na 2 SO 4 and Na
Defoaming fining agents, such as metal halides such as Cl, are also known, but they have the disadvantage that the defoaming effect is small and the light transmittance of glass is poor.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、前記従来の
技術にみられる諸欠点を総合的に改善し、環境問題を改
善しつつ、脱泡均質性と光線透過性に共に優れたガラス
の製造方法を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention is to provide a glass having excellent both defoaming homogeneity and light transmittance while improving the above-mentioned disadvantages of the prior art and improving environmental problems. It is intended to provide a manufacturing method.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、本発明者等は鋭意試験研究を重ねた結果、意外にも
適量のハロゲン元素と錫元素を含む化合物原料を添加し
たガラス原料を溶融することにより、上記環境問題を改
善しつつ、脱泡清澄度が高く、かつ光線透過率の向上し
たガラスを製造し得ることをみいだすことができ、本発
明をなすに至った。Means for Solving the Problems In order to achieve the above object, the present inventors have made intensive tests and studies and, as a result, unexpectedly melted a glass raw material to which an appropriate amount of a compound raw material containing a halogen element and a tin element was added. By doing so, it has been found that a glass having high defoaming clarity and improved light transmittance can be produced while improving the above environmental problems, and the present invention has been accomplished.
【０００５】本願第一の発明にかかる酸化物系ガラスの
製造方法の特徴は、珪酸塩系、ホウ珪酸塩系およびリン
酸塩系ガラス等の酸化物系ガラスの製造に当たり、上記
ガラスの調合原料中にこの原料から得られる基礎ガラス
に対し、主要脱泡清澄剤として、１種以上の金属ハロゲ
ン化物および１種以上の錫（Ｓｎ）化合物を、ハロゲン
元素（Ｆ、Ｃｌ、ＢｒおよびＩ）の１種または２種以上
の合計量で０．００５〜２重量％未満および錫元素（Ｓ
ｎ）の合計量で０．０１〜１重量％添加し、ついでこの
ガラス原料を溶融することにある。ここで、ハロゲン元
素と錫元素の量が、下限値より少ないと所期の効果を得
難く、また上限値より多いとガラスは着色や脈理を生じ
やすくなる。[0005] A feature of the method for producing an oxide glass according to the first invention of the present application is that, in the production of an oxide glass such as a silicate glass, a borosilicate glass or a phosphate glass, the mixed raw material of the above glass is used. Base glass obtained from this raw material inside
On the other hand, one or more metal halides and one or more tin (Sn) compounds are used as main defoaming fining agents, and the total amount of one or more halogen elements (F, Cl, Br and I) And less than 0.005 to 2% by weight and tin element (S
The total amount of n) is 0.01 to 1% by weight, and then the glass raw material is melted. Here, if the amounts of the halogen element and the tin element are less than the lower limits, it is difficult to obtain the desired effect, and if the amounts are more than the upper limits, the glass is liable to be colored or striae.
【０００６】また、本願第二の発明にかかる弗素含有系
ガラスの製造方法の特徴は、２重量％以上の弗素（Ｆ）
を含有する弗リン酸塩系ガラス、弗化物系ガラスおよび
珪酸弗化物系ガラス等の弗素含有系ガラスの製造に当た
り、上記ガラスの調合原料中にこの原料から得られる基
礎ガラスに対し、主要脱泡清澄剤として、１種以上の金
属ハロゲン化物（ただし、金属弗化物を除く）および１
種以上の錫（Ｓｎ）化合物を、ハロゲン元素（Ｃｌ、Ｂ
ｒおよびＩ）の１種または２種の合計量で０．００５〜
２重量％および錫元素（Ｓｎ）の合計量で０．０１〜１
重量％添加し、ついでこのガラス原料を溶融することに
ある。ここで、ハロゲン元素と錫元素の量が、下限値よ
り少ないと所期の効果を得難く、また所期の効果を得る
には上限値までで十分である。A feature of the method for producing a fluorine-containing glass according to the second invention of the present application is that fluorine (F) of 2% by weight or more.
Hydrofluoric phosphate type glass containing, per the production of fluorine-containing glass such as fluoride glass and silicate fluoride glass, a group derived from the raw material preparation in the feed of the glass
For foundation glass , one or more metal halides (excluding metal fluorides) and 1
More than one kind of tin (Sn) compound is converted to a halogen element (Cl, B
r and I) in a total amount of one or two of 0.005 to
0.01 to 1 in a total amount of 2% by weight and tin element (Sn)
% By weight and then melting the glass material. Here, if the amounts of the halogen element and the tin element are smaller than the lower limit values, it is difficult to obtain the desired effect, and the upper limit value is sufficient to obtain the desired effect.
【０００７】上記本願両発明のガラスの製造方法の実施
に当たり、脱泡清澄剤が添加されるガラス調合原料は、
酸化物、炭酸塩、硝酸塩、リン酸塩および弗化物等の成
分原料のみを適宜用いた調合バッチ状のものであっても
よく、ガラスカレットのみのものまたは上記調合バッチ
とガラスカレットの混合状態のものであってもよい。ま
た、脱泡清澄剤はハロゲン化錫を用いることができる
が、これを除く１価ないし４価の金属ハロゲン化物の１
種以上とＳｎＯ、ＳｎＯ2等の錫化合物の１種以上を組
み合わせて用いると好結果がより得やすくなる。[0007] In carrying out the glass production method of the present invention, the glass preparation raw material to which the defoaming fining agent is added is as follows:
Oxide, carbonate, nitrate, phosphate and fluoride may be in the form of a blended batch using only component raw materials as appropriate, such as glass cullet alone or a mixture of the above blended batch and glass cullet. It may be something. As the defoaming fining agent, tin halide can be used, but one of monovalent to tetravalent metal halides other than tin halide is used.
When a combination of at least one species and at least one of tin compounds such as SnO and SnO 2 is used, good results are more easily obtained.
【０００８】さらに、上記脱泡清澄剤中の金属ハロゲン
化物の金属元素の種類は、特に限定されるものではない
が、最終ガラス製品の目標性能に影響を与え不都合を生
ずる場合は、基礎ガラス中に含まれる金属元素を１種以
上適宜選択するとよい。なお、上記本発明の脱泡清澄剤
に公知の他の脱泡剤を必要に応じ補助的に添加してもさ
しつかえない。[0008] Further, the kind of metal element of the metal halide in the defoaming fining agent is not particularly limited. , One or more metal elements may be appropriately selected. In addition, other known defoaming agents may be supplementarily added to the defoaming fining agent of the present invention as needed.
【０００９】[0009]
【実施例】ここで、本願第一の発明の酸化物系ガラスの
製造方法にかかる実施例について、説明する。この実施
例では、重量％で、ＳｉＯ2 ３１．０％、Ｂ2Ｏ3 １
８．０％、Ａｌ2Ｏ3 １．０％、Ｎａ2Ｏ １．０％、
ＢａＯ ４９．０％からなるホウ珪酸塩系の酸化物系ガ
ラスを脱泡清澄剤添加対象の基礎ガラスとして採用し、
このような酸化物系ガラスが最終的に得られるよう、粒
度１２０メッシュのＳｉＯ2、Ｈ3ＢＯ3、Ａｌ（Ｏ
Ｈ）3、Ｎａ2ＣＯ3、ＢａＣＯ3およびＢａ（ＮＯ3）2の
各成分原料を使用してガラス調合原料とした。この調合
原料は、予めテストに必要な数のバッチを調整した。こ
の基礎ガラスに対し、脱泡清澄剤として、ＮａＦ原料を
弗素（Ｆ）の量が、重量％で０．００５％、０．０１
％、０．１％、０．５％および１．０％となるよう、ま
たこれらに加えてＳｎＯ2原料を錫元素（Ｓｎ）の量
が、重量％でいずれも０．２％となるよう上記の各調合
原料バッチに添加、混合した。つぎにこれらの原料バッ
チを所定の白金製の坩堝と撹拌羽根を用いて、１３００
℃で２時間所定の撹拌操作を加えて溶融した後、得られ
たガラスを金型にキャストし、徐冷炉中で冷却した。EXAMPLE Here, an example according to the method for producing an oxide glass of the first invention of the present application will be described. In this example, 31.0% of SiO 2 and B 2 O 3 1
8.0%, Al 2 O 3 1.0%, Na 2 O 1.0%,
A borosilicate oxide glass composed of 49.0% of BaO is used as a base glass to which a defoaming fining agent is added,
In order to finally obtain such an oxide-based glass, SiO 2 , H 3 BO 3 , Al (O
H) 3 , Na 2 CO 3 , BaCO 3, and Ba (NO 3 ) 2 were used as raw materials for glass blending. The prepared raw material was prepared in advance for the number of batches required for the test. The base glass to as defoaming fining agent, the amount of NaF raw fluorine (F), 0.005% in weight percent, 0.01
%, 0.1%, 0.5% and 1.0%, and in addition, the SnO 2 raw material is adjusted so that the amount of elemental tin (Sn) becomes 0.2% by weight. It was added to each of the above prepared batches and mixed. Next, these raw material batches were prepared by using a predetermined platinum crucible and stirring blades for 1300 minutes.
After melting by adding a predetermined stirring operation at 2 ° C. for 2 hours, the obtained glass was cast in a mold and cooled in an annealing furnace.
【００１０】図１の曲線Ａは、こうして得たガラス塊に
ついて容積約１００ｍｌを占める部分の泡の総数をカウ
ントし、１ｍｌ中の泡個数に換算して、上記脱泡清澄剤
の添加量との関係をプロットし示したものである。図１
の曲線Ｂは、上記の基礎ガラスにＮａＦのみ単独で同様
に添加し溶融した場合の結果を比較として示したもので
ある。なお、上記の基礎ガラスにＳｎＯ2のみ単独で同
様に添加し溶融した場合、Ｓｎ添加量（０．００５〜
１．０％）の多少に拘らず、泡は無数に生じた。[0010] Curve A in FIG. 1 shows the total number of bubbles in a portion occupying about 100 ml in the glass lump thus obtained, which is converted into the number of bubbles in 1 ml. The relationship is plotted and shown. FIG.
Curve B shows the result when only NaF alone was similarly added to the above base glass and melted. In addition, when SnO 2 alone is similarly added alone to the above base glass and melted, the amount of Sn added (0.005 to
1.0%), countless bubbles were generated.
【００１１】図２の曲線Ａ′は、上記実施例においてＦ
＝０．５％およびＳｎ＝０．２％を添加して得たガラス
の対面研磨試料板（厚さ１０ｍｍ）について測定した分
光透過率曲線である。また、同図の曲線Ｂ′は、上記の
比較として示したＮａＦ単独添加（Ｆ＝０．５％）の場
合の同様の分光透過率曲線である。ここで、曲線Ａ′お
よび曲線Ｂ′のガラス試料について、透過率が８０％お
よび５％を与える光線波長（Ｔ80／Ｔ5）を１０ｎｍ単
位で表すとそれぞれ３６／３０および３９／３０の値と
なる。上記のとおり、この実施例により得られるガラス
は、比較例によるものに比べ脱泡清澄度が一段と高く、
しかも光線透過率がより優れている。The curve A 'in FIG.
4 is a spectral transmittance curve measured on a facing polished sample plate (10 mm thick) of glass obtained by adding 0.5% and Sn = 0.2%. Further, a curve B 'in the same figure is a similar spectral transmittance curve when NaF alone is added (F = 0.5%) shown as the above comparison. Here, for the glass samples of the curves A 'and B', the light wavelength (T 80 / T 5 ) at which the transmittance gives 80% and 5% is expressed in units of 10 nm, and the values are 36/30 and 39/30, respectively. Becomes As described above, the glass obtained by this example has a higher defoaming clarity than that of the comparative example,
Moreover, the light transmittance is more excellent.
【００１２】表１に他の酸化物系ガラスを製造する場合
の実施例（Ｎｏ．１〜Ｎｏ．７）について、Ａｓ2Ｏ3や
Ｓｂ2Ｏ3を除く従来の脱泡剤使用の比較例（Ｎｏ．Ｉ〜
Ｎｏ．Ｖ）とともに示したが、これらについて同様に原
料を調整し、基礎ガラス組成による溶融の難易度に応
じ、１０００〜１４５０℃、２〜６時間の範囲の溶融条
件を適宜選び同様にガラスを溶融したところ、表にみら
れるようにいずれも上記実施例と同様、泡数と光線透過
率の点で優れた効果が得られた。Table 1 shows a comparative example of the use of a conventional defoamer except for As 2 O 3 and Sb 2 O 3 with respect to Examples (No. 1 to No. 7) in the case of producing another oxide glass. (No. I ~
No. Although shown together with V), the raw materials were adjusted in the same manner, and the glass was melted similarly by appropriately selecting the melting conditions in the range of 1000 to 1450 ° C. for 2 to 6 hours according to the degree of melting difficulty due to the base glass composition. However, as can be seen from the table, as in the above examples, excellent effects were obtained in terms of the number of bubbles and the light transmittance.
【００１３】つぎに、本願第二の発明の弗素（Ｆ）含有
系ガラスの製造方法にかかる実施例について、説明す
る。この実施例では、重量％で、ＳｉＯ2 ５７．０
％、Ｂ2Ｏ3 １６．０％、Ｋ2Ｏ ５．６％およびＫＨ
Ｆ2 ２１．０％（Ｆ＝１０．５１％）からなる弗素含
有ホウ珪酸塩系ガラスを基礎ガラスとし、このような弗
素含有系ガラスが最終的に得られるよう、前記実施例の
場合と同様粒度１２０メッシュのＳｉＯ2、Ｈ3ＢＯ3、
Ｋ2ＣＯ3およびＫＨＦ2の各成分原料を使用してガラス
調合原料を所要バッチ個数調整し、これらの原料バッチ
中に、この基礎ガラスに対し、脱泡清澄剤としてＫＢｒ
成分原料を臭素元素（Ｂｒ）の量が、重量％で０．００
５％、０．０１％、０．１％、０．５％および１．０％
となるよう、またこれらに加えてＳｎＯ2成分原料を錫
元素（Ｓｎ）の量が、重量％でいずれも０．２％ とな
るようそれぞれ添加、混合した。つぎに、これらの原料
バッチを１３００℃で２時間、前記実施例と同様にして
溶融し、得られたガラスを冷却した。Next, an example of a method for producing a fluorine (F) -containing glass according to the second invention of the present application will be described. In this example, SiO 2 57.0% by weight is used.
%, B 2 O 3 16.0% , K 2 O 5.6% and KH
A fluorine-containing borosilicate glass composed of 21.0% F 2 (F = 10.51%) is used as a base glass, and the fluorine-containing glass is obtained in the same manner as in the above embodiment so that such a fluorine-containing glass is finally obtained. SiO 2 , H 3 BO 3 with a particle size of 120 mesh,
The required number of batches of the glass blended raw material was adjusted using the respective component raw materials of K 2 CO 3 and KHF 2 , and KBr was used as a defoaming fining agent for the base glass in these raw material batches.
The amount of the bromine element (Br) is 0.00% by weight.
5%, 0.01%, 0.1%, 0.5% and 1.0%
In addition, SnO 2 component raw materials were added and mixed so that the amount of tin element (Sn) was 0.2% by weight in each case. Next, these raw material batches were melted at 1300 ° C. for 2 hours in the same manner as in the above example, and the obtained glass was cooled.
【００１４】図３に示した曲線Ｃは、得られたガラスに
ついて前記実施例と同様にして示した脱泡清澄剤の添加
量と泡数の関係をプロットして得た曲線である。また、
同図曲線Ｄは、上記の基礎ガラスにＫＢｒのみ単独で同
様に添加した場合の結果を比較して示したものである。
なお、上記の基礎ガラスにＳｎＯ2のみ単独で同様に添
加し溶融した場合、Ｓｎ添加量の多少に拘らず、泡は無
数に生じた。The curve C shown in FIG. 3 is a curve obtained by plotting the relationship between the amount of the defoaming fining agent added and the number of bubbles shown in the same manner as in the above example for the obtained glass. Also,
The curve D in the figure shows a comparison between the results obtained when only KBr alone was similarly added to the above-mentioned base glass.
In addition, when SnO 2 alone was similarly added to the above base glass and melted, countless bubbles were generated regardless of the amount of Sn added.
【００１５】図４の曲線Ｃ′は、上記実施例において、
Ｂｒ＝０．５％およびＳｎ＝０．２％を添加して得たガ
ラスについて測定した分光透過率曲線である。また、同
図の曲線Ｄ′は上記の比較として示したＫＢｒ単独添加
（Ｂｒ＝０．５％）の場合の同様の分光透過率曲線であ
る。この曲線Ｃ′およびＤ′のガラスのＴ80／Ｔ5の値
は、それぞれ３５／２８および３３／２８である。以上
のとおり、この実施例により得られるガラスは、比較例
によるものに比べ、脱泡清澄度が一段と高く、しかも光
線透過率がより優れている。The curve C 'in FIG.
It is the spectral transmittance curve measured about the glass obtained by adding Br = 0.5% and Sn = 0.2%. Further, a curve D 'in the same figure is a similar spectral transmittance curve when KBr alone is added (Br = 0.5%) shown as the above comparison. The values of T 80 / T 5 for the glasses of curves C ′ and D ′ are 35/28 and 33/28, respectively. As described above, the glass obtained by this example has much higher defoaming clarity and more excellent light transmittance than the glass obtained by the comparative example.
【００１６】表２に他の弗素含有系ガラスを製造する場
合の実施例について示したが、これらについて同様に所
定の脱泡清澄剤を添加したガラス原料を調整し、これら
を基礎ガラス組成による溶融の難易度に応じて、８００
〜１１５０℃、２〜４時間の範囲の溶融条件を適宜選
び、同様に溶融したところ、表にみられるように得られ
たガラスはいずれも泡数がゼロに等しく、またＴ80／Ｔ
5の値が３４／２９であって、優れた効果を示した。な
お、これらの実施例において、各調合原料にそれぞれ基
礎ガラスに対し、Ｎａ2ＳＯ4原料をＳＯ3の量で０．２
重量 ％単独添加した場合および同じくＫＢｒ原料をＢ
ｒの量で０．２重量％単独添加した場合について、それ
ぞれ同様にテストしたところ、いずれも泡数は２〜５個
であり、またＴ80／Ｔ5の値は３５／２９であった。Table 2 shows examples of the production of other fluorine-containing glasses. In the same manner, glass raw materials to which a predetermined defoaming fining agent was added were prepared, and these were melted according to the base glass composition. 800 depending on the difficulty of
Melting conditions in the range of １1150 ° C. for 2 to 4 hours were appropriately selected and similarly melted. As can be seen from the table, all of the glasses obtained had a bubble number equal to zero and a T 80 / T
The value of 5 was 34/29, indicating an excellent effect. In these examples, the base materials were
To foundation glass, over Na 2 SO 4 feedstock in an amount of SO 3 0.2
Wt% alone and KBr starting material
The case where the amount of 0.2 wt% is added alone r, was tested in the same manner, respectively, both the number of bubbles is 2-5, and the value of T 80 / T 5 was 35/29.
【表１】 [Table 1]
【表２】 [Table 2]
【表３】 [Table 3]
【表４】 [Table 4]
【表５】 [Table 5]
【表６】 [Table 6]
【表７】 [Table 7]
【００１７】[0017]
【発明の効果】以上に述べたとおり、本願第一の発明の
酸化物系ガラスの製造方法は、上記ガラスの調合原料
に、基礎ガラスに対し、所定範囲量のハロゲン元素と錫
元素（Ｓｎ）が含まれるよう金属ハロゲン化物および錫
化合物を添加、混合し、これを溶融する方法によるもの
であるから、従来の方法に比べ、環境問題を改善しつ
つ、脱泡清澄度と光線透過率が一段と向上した酸化物系
ガラスを製造することができる。As described above, according to the method for producing an oxide glass of the first invention of the present application , a predetermined range of the amount of a halogen element and a tin element (Sn) are added to a base material of a glass. It is based on the method of adding, mixing and melting the metal halide and the tin compound so that the defoaming clarity and light transmittance are further improved compared to the conventional method while improving the environmental problems. An improved oxide-based glass can be manufactured.
【００１８】また、本願第二の発明の弗素含有系ガラス
の製造方法は、上記系のガラスの調合原料に、基礎ガラ
スに対し、所定範囲量の弗素（Ｆ）を除くハロゲン元素
と錫元素（Ｓｎ）が含まれるよう金属ハロゲン化物およ
び錫化合物を添加、混合し、これを溶融する方法による
ものであるから、従来の方法に比べ、上記同様の優れた
効果を奏する。Further, the method for producing a fluorine-containing glass according to the second invention of the present application is characterized in that a base glass
Scan to, Oyo metal halides to include the halogen element and the tin element (Sn) except fluorine (F) in a predetermined amount ranging
And a tin compound are added, mixed and melted, so that the same excellent effects as described above can be obtained as compared with the conventional method.
【図１】本願第一の発明方法の実施例における脱泡剤添
加量と得られたガラスの泡数の関係を比較例とともに示
した図である。FIG. 1 is a diagram showing the relationship between the amount of a defoaming agent added and the number of bubbles of the obtained glass together with a comparative example in an example of the method of the first invention of the present application.
【図２】図１に示した一実施例とその比較例において得
られたガラスの分光透過率曲線図である。FIG. 2 is a graph showing spectral transmittance curves of glasses obtained in an example shown in FIG. 1 and a comparative example.
【図３】本願第二の発明方法における図１と同様の関係
を示す図である。FIG. 3 is a diagram showing the same relationship as in FIG. 1 in the second invention method of the present application.
【図４】図３に示した一実施例とその比較例において得
られたガラスの分光透過率曲線図である。FIG. 4 is a graph showing spectral transmittance curves of glasses obtained in an example shown in FIG. 3 and a comparative example thereof.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 保井 秀夫 神奈川県相模原市小山１丁目15番30号 株式会社オハラ内 (56)参考文献 特開 平２−133334（ＪＰ，Ａ) 特開 昭55−109242（ＪＰ，Ａ) 特開 平６−135737（ＪＰ，Ａ) 作花済夫ほか、「ガラスハンドブッ ク」、初版、朝倉書店、昭和50年９月30 日発行、ｐ．297−ｐ．298 (58)調査した分野(Int.Cl.7，ＤＢ名) C03C 1/00 - 14/00 C03B 5/18 C03B 5/225 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideo Yasui 1-15-30 Koyama, Sagamihara City, Kanagawa Prefecture Oharanai Co., Ltd. (56) References JP-A-2-133334 (JP, A) JP-A-55- 109242 (JP, A) JP-A-6-135737 (JP, A) Saio Sakuhana et al., "Glass Handbook", First Edition, Asakura Shoten, issued September 30, 1975, p. 297-p. 298 (58) Field surveyed (Int. Cl. 7 , DB name) C03C 1/00-14/00 C03B 5/18 C03B 5/225
Claims (4)
調合原料中に上記系の基礎ガラスに対し、主要脱泡清澄
剤として、１種以上の金属ハロゲン化物および１種以上
の錫（Ｓｎ）化合物を、ハロゲン元素（Ｆ、Ｃｌ、Ｂｒ
およびＩ）の１種または２種以上の合計量で０．００５
〜２重量％未満および錫元素（Ｓｎ）の合計量で０．０
１〜１重量％添加し、ついでこのガラス調合原料を溶融
することを特徴とする酸化物系ガラスの製造方法。In producing an oxide-based glass, one or more metal halides and one or more tin (Sn) compounds are used as a main defoaming fining agent in a glass blending raw material with respect to a base glass of the above-mentioned system. With a halogen element (F, Cl, Br)
And 0.005 in total of one or more of I)
~ 2% by weight and a total amount of elemental tin (Sn) of 0.0
A method for producing an oxide-based glass, comprising adding 1 to 1% by weight and then melting the glass-mixed raw material.
2Two から選ばれる１種以上であることを特徴とする請求項Claims characterized by at least one selected from the group consisting of:
１に記載の酸化物系ガラスの製造方法。2. The method for producing an oxide-based glass according to item 1.
製造に当たり、ガラス調合原料中に上記系の基礎ガラス
に対し、主要脱泡清澄剤として、金属弗化物を除く１種
以上の金属ハロゲン化物および１種以上の錫（Ｓｎ）化
合物を、ハロゲン元素（Ｃｌ、ＢｒおよびＩ）の１種ま
たは２種の合計量で０．００５〜２重量％および錫元素
（Ｓｎ）の合計量で０．０１〜１重量％添加し、ついで
このガラス調合原料を溶融することを特徴とする弗素含
有系ガラスの製造方法。3. A base glass of the above type in a glass blending raw material for producing a glass containing 2% by weight or more of fluorine (F).
On the other hand, as a main defoaming fining agent, one or more metal halides other than metal fluorides and one or more tin (Sn) compounds were replaced with one or two halogen elements (Cl, Br and I). A method for producing a fluorine-containing glass, characterized by adding 0.005 to 2% by weight in total and 0.01 to 1% by weight in total of elemental tin (Sn), and then melting the glass blended raw material. .
2Two から選ばれる１種以上であることを特徴とする請求項Claims characterized by at least one selected from the group consisting of:
３に記載の弗素含有系ガラスの製造方法。3. The method for producing a fluorine-containing glass according to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13588692A JP3247145B2 (en) | 1992-04-28 | 1992-04-28 | Method for producing oxide-based glass and fluorine-containing glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13588692A JP3247145B2 (en) | 1992-04-28 | 1992-04-28 | Method for producing oxide-based glass and fluorine-containing glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05306140A JPH05306140A (en) | 1993-11-19 |
| JP3247145B2 true JP3247145B2 (en) | 2002-01-15 |
Family
ID=15162091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13588692A Expired - Fee Related JP3247145B2 (en) | 1992-04-28 | 1992-04-28 | Method for producing oxide-based glass and fluorine-containing glass |
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| Country | Link |
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| JP (1) | JP3247145B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824127A (en) * | 1996-07-19 | 1998-10-20 | Corning Incorporated | Arsenic-free glasses |
| JP3897194B2 (en) * | 1997-07-24 | 2007-03-22 | 日本電気硝子株式会社 | Alkali-free glass and method for producing the same |
| JP2001328820A (en) * | 2000-05-16 | 2001-11-27 | Nippon Electric Glass Co Ltd | Method for producing glass |
| JP2001328819A (en) * | 2000-05-16 | 2001-11-27 | Nippon Electric Glass Co Ltd | Method for producing glass |
| FR2887870B1 (en) * | 2005-06-30 | 2007-10-05 | Snc Eurokera Soc En Nom Collec | PREPARATION OF BETA-QUARTZ AND / OR BETA-SPODUMENE VITROCERAMICS, ARTICLES IN SUCH VITROCERAMICS; VITROCERAMICS, ARCTICLES IN SAID VITROCERAMIC AND PRECURSOR GLASSES |
| FR2887871B1 (en) * | 2005-06-30 | 2007-10-12 | Snc Eurokera Soc En Nom Collec | BETA-QUARTZ AND / OR BETA SPODUMENE VITROCERAMICS, PRECURSOR GLASSES, ARTICLES THEREOF, VITROCERAMIC PRODUCTS AND ARTICLES |
| JP2008050262A (en) * | 2007-10-15 | 2008-03-06 | Asahi Glass Co Ltd | Method for clarifying alkali-free glass |
| US7908886B2 (en) * | 2008-02-22 | 2011-03-22 | Corning Incorporated | Oxyhalide glass fining |
| WO2010007903A1 (en) * | 2008-07-14 | 2010-01-21 | コニカミノルタオプト株式会社 | Glass substrate for information recording medium and information recording medium |
| US8652659B2 (en) | 2008-07-14 | 2014-02-18 | Konica Minolta Opto, Inc. | Glass substrate for information recording medium and information recording medium |
| JP5378821B2 (en) * | 2009-01-30 | 2013-12-25 | Ｄｏｗａエコシステム株式会社 | Clarifying agent and production method thereof |
-
1992
- 1992-04-28 JP JP13588692A patent/JP3247145B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 作花済夫ほか、「ガラスハンドブック」、初版、朝倉書店、昭和５０年９月３０日発行、ｐ．２９７−ｐ．２９８ |
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| Publication number | Publication date |
|---|---|
| JPH05306140A (en) | 1993-11-19 |
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